CN104913153A - Phase change energy storage insulation pipeline - Google Patents
Phase change energy storage insulation pipeline Download PDFInfo
- Publication number
- CN104913153A CN104913153A CN201510340329.7A CN201510340329A CN104913153A CN 104913153 A CN104913153 A CN 104913153A CN 201510340329 A CN201510340329 A CN 201510340329A CN 104913153 A CN104913153 A CN 104913153A
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- CN
- China
- Prior art keywords
- phase
- pipeline
- flange
- phase change
- change energy
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
- F16L53/30—Heating of pipes or pipe systems
- F16L53/32—Heating of pipes or pipe systems using hot fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
Abstract
The invention discloses a phase change energy storage insulation pipeline. The phase change energy storage insulation pipeline comprises an inner pipeline body and an outer pipeline body, the inner pipeline body is sleeved with the outer pipeline body, the inner pipeline body is fixedly connected with the outer pipeline body through flanges at the two ends of the inner pipeline body in a sealed mode, the outer pipeline body is provided with two filling pipes, one filling pipe is provided with a one-way valve, an opening of the other filling pipe is provided with a blocking pipe cap, and the space between the inner pipeline body and the outer pipeline body is filled with phase change materials. Thus, the phase change energy storage insulation pipeline of a segmented semi-closed double-layer insulation structure is formed, and pipeline segments are connected through flanges at the ends of the pipeline segments. According to the theory that the phase change materials absorb or release considerable latent heat in the phase change process and the temperature of the phase change materials is almost unchanged, the phase change energy storage insulation pipeline reduces temperature differences between the high temperature environment and media and effectively reduces cold (heat) losses in the cold (heat) delivery process.
Description
Technical field
The invention belongs to pipeline heat-insulating technology field, be specifically related to a kind of phase-change energy-storing heat preservation pipeline.
Background technique
At present, in each large office building of China, store, subway station even mine cooling, mostly centralized heat supply and central air-conditioning system is adopted.The load of centralized heat supply and air-conditioning system and area (or radius) all larger, medium conveying distance longer, along Cheng Leng (heat) amount lose larger.
Pipeline cold (heat) loss of China's Heating,Ventilating and Air Conditioning (HVAC) industry accounts for 7.5% one 8% of whole cooling (heat) system energy consumption.Heat distribution pipeline and equipment are after taking cold insulation (temperature), and cold (heat) loss can greatly reduce.In addition, after equipment and pipeline adopt good Insulation and material, also can reduce energy consumption and cost, environmental protect, have good economic benefit simultaneously, the investment about a year being generally used for thermal insulating material can be regained by the energy saved.So carrying out insulation to heat distribution pipeline and equipment is reduce system energy consumption, realize energy-conservation the most directly, most effective measures.
At present, many countries are all carrying out defeated heat (cold) heat insulation structure and research that is heat insulation, moisture barrier material, and they require that the thermal-protective material of defeated heat (cold) pipeline must have the characteristic feature that thermal conductivity is little and water resistance is strong.For reaching this object, people adopt special chemical technology, cause the heat transfer condition of " stationary gas " in the material that can foam, and by the little gas collection of thermal conductivity in the closed trickle mesh of material, prevent from being conducted heat by gaseous exchange.Many foamed plastics all have this performance, and conventional insulation (cold) material has: polystyrene, polyethylene, polyurethane etc.At insulation (cold) pipeline configuration design aspect, the defeated cold pipeline of many mines generally adopts polystyrene foam plastics to make the heat insulation shell of semi-cylindrical type, be wound around wrapping with the glass fibre cloth of kiss-coating, now part is used instead and is poured into a mould RPUF etc. between inner and outer pipes and make thermal-protective coating.
All there is following problem in above-mentioned technology: (1) complex structure; (2) construction is inconvenient, and because insulation pipe needs to adopt multilayer to lay, and require strict for work progress, construction is got up more difficult; (3) maintenance difficult, for conventional vacuum pipeline, needs all thermal insulation layers of dismantling, adds workload to maintenance during maintenance; (4) thermal insulating material is easily aging, and heat insulation effect is poor; (5) working life is shorter.
Summary of the invention
The object of the invention is to for there is above-mentioned defect in prior art, thering is provided a kind of utilizes phase-change material in phase transition process, absorb or discharge sizable latent heat and the almost constant principle of self temperature, thus the temperature difference reduced between hot environment and medium, effectively reduce the phase-change energy-storing heat preservation pipeline of cold (heat) amount loss in defeated cold (heat) process.
The present invention seeks to realize by the following technical solutions: this phase-change energy-storing heat preservation pipeline, it comprises interior conduit and Outer Tube, and interior conduit is set within Outer Tube, and is connected by the flange seal at its two ends; On described Outer Tube, homonymy is provided with two filler lines near the position of two end flange, and one of them filler line is provided with one-way valve, and another filler line mouth of pipe is provided with plugging pipe cap; Phase-change material is full of in space between inside and outside pipeline; So, form the phase-change energy-storing heat preservation pipeline of the semi-enclosed double-decked insulation of segmentation, each segment pipe is interconnected by the flange of its end.
Concrete, described interior conduit, Outer Tube and flange are metallic material and make.
Concrete, described end face of flange is the male and female flange of heavy convex two steps.
Further, described interior conduit adopts seamless steel pipe, inserts in the heavy mouth of male and female flange, and with being welded to connect; Described Outer Tube adopts two pieces of semi-circular sheet steel butt welding to form, and is welded on the outer convex surface step of male and female flange.
Phase-change energy-storing heat preservation pipeline of the present invention; integrate thermal insulation layer, vapor barrier, protective layer, flame-retardant layer; both be incubated; moisture resistance, fire-retardant, not fragile again; effectively can stop the infiltration of water and steam; do not affect the performance of thermal insulation layer, effectively reduce pipeline cold (heat) the amount loss of cold (heat) matchmaker long distance delivery in cooling (heat) system.And phase-change material between inside and outside pipeline absorb be increased to fusing point after heat in external temperature or pipe time, produce phase transformation, absorb and store a large amount of latent heat, stop heat to invade interior pipe to a certain extent.When temperature is higher than phase transition temperature, the heat that phase-change material stores is discharged in medium in certain temperature range, carries out reverse transformation process.In these two kinds of phase transition process, energy that is stored or release is latent heat of phase change.Although physical state changes, the temperature of material self almost remains unchanged before phase transformation completes, and forms a wider temperature platform.Phase-change material, while absorption or release latent heat, reduces the hot-fluid fluctuation between environment and medium, thus reduces the temperature difference of medium and external environment in pipe, effectively reduces the loss of cold (heat) amount.
Phase-change energy-storing heat preservation pipeline of the present invention; integrate phase-change material layers (thermal insulation layer), vapor barrier, protective layer, flame-retardant layer, be the closed cold insulation structure of a kind of segmentation, multiple raw material can be saved; save construction sequence, be also convenient to transport, install, dismantle.
Be summed up, the present invention compared with prior art, has the advantage of the following aspects:
(1) the present invention integrates thermal insulation layer, vapor barrier, protective layer, flame-retardant layer, and structure is simple, saves material, and production technology is simple, saves plenty of time and labour force;
(2) the present invention was both incubated, moisture resistance, fire-retardant, not fragile again, effectively can stop the infiltration of water and steam, not affect thermal insulation property, effectively reduced the loss of refrigeration capacity in defeated cold process, and long service life.
(3) the present invention is the semi-enclosed double-deck cold insulation pipeline of a kind of segmentation, by Flange joint between pipeline, is conducive to transport and installs, easy construction;
(4) the present invention utilizes phase-change material absorb in phase transition process or discharge a large amount of latent heat, and the principle that the temperature of self is almost constant, decrease the temperature difference between environment and medium, effectively reduce cold (heat) amount loss in defeated cold (heat) process.
Accompanying drawing explanation
Fig. 1 is the local delamination surface structure schematic diagram of phase-change energy-storing heat preservation pipeline of the present invention.
Fig. 2 is the axial section of phase-change energy-storing heat preservation pipeline of the present invention.
Fig. 3 is the end face sectional view of phase-change energy-storing heat preservation pipeline of the present invention.
Fig. 4 is the structural representation of flange of the present invention.
Fig. 5 is the sectional drawing of flange of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
See Fig. 1 to Fig. 3, the embodiment of the present invention comprises inner metal tube road 1 and outer metallic conduit 2, and inner metal tube road 1 is set within outer metallic conduit 2, and is connected by metal flange 4 sealing at its two ends.On outer metallic conduit 2, homonymy is provided with two filler lines 5,6 near the position of two end flange, and wherein, filler line 6 is provided with one-way valve 7, and the mouth of pipe of another filler line 5 is provided with plugging pipe cap (not shown in FIG.); Phase-change material 8 is full of in space between inner metal tube road 1 and outer metallic conduit 2; So, form the phase-change energy-storing heat preservation pipeline of the semi-enclosed double-decked insulation of segmentation, each segment pipe is interconnected by the metal flange 4 of its end.
See Fig. 4 to Fig. 5, metal flange 4 adopts male and female flange (a heavy boss flange).Go out a circle with conventional flange unlike cars many on convex flange and sink mouth, metallic conduit 1 is welded in the heavy mouth of metal flange 4, and metallic conduit 2 is welded on the outer convex surface step of metal flange 4.The designing requirement of metal flange 4 is: flange sinks the width (D2-D1) of mouth slightly larger than the wall thickness of metallic conduit 1, and D1 equals the internal diameter of metallic conduit 1; The outer diameter D 4 of flange convex surface step is slightly less than the internal diameter of metallic conduit 2.Metallic conduit 1 adopts seamless steel pipe, and metallic conduit 2 adopts two pieces of semi-circular sheet steel butt welding to form, and meets protected from moisture.In addition, metal flange 4 need carry out isothermal holding.
Phase-change material 8 should have following characteristics: fire prevention is not fired, durability is strong, safe and reliable, nontoxic, easy construction etc.When filled phase-change material, first be liquid by phase-change material heating and melting, by insulation pipe slant setting in ground, wherein one end is higher than the distance of the Altitude control H (1-2 times of pipe diameter) in the horizontal plane of the other end, the low side filler line (be provided with the filler line 6 of one-way valve 7) of liquid state phase change material from cylindrical shell pipeline is injected, after high-end filler line (being provided with the filler line 5 of plugging pipe cap) mouth of pipe overflowing liquid, stop filling, after cooling under insulation pipe being placed in low temperature environment, filler line 5 is sealed with plugging pipe cap.
When pipeline is used for heating agent transport, the heat of medium in phase-change material absorption tube, temperature is increased to phase transition temperature gradually, and phase-change material becomes liquid state from solid-state, stores a large amount of latent heat, but temperature to remain on phase transition temperature constant.When temperature is higher than phase transition temperature, the cold in phase-change material absorbing environmental, phase-change material discharges latent heat of phase change in certain temperature range, and phase-change material carries out reverse transformation process, and phase is become solid-state from liquid state.In like manner, when pipeline is used for refrigerant transport, phase-change material absorbs the heat in surrounding environment, and temperature is increased to phase transition temperature gradually, and the phase of phase-change material becomes liquid state from solid-state, stores a large amount of latent heat, but temperature to remain on phase transition temperature constant.When to flow through temperature in metallic conduit 1 be the chilled water of 5 ~ 7 DEG C, phase-change material discharges latent heat of phase change in certain temperature range, and phase-change material carries out reverse transformation process, and phase is become solid-state from liquid state.
In whole process, although physical state changes, the temperature of material self almost remains unchanged before phase transformation completes, and forms a wider temperature platform.Phase-change material, while absorption or release latent heat, reduces the hot-fluid fluctuation between environment and medium, thus reduces temperature drop or the temperature rise of medium in pipe, effectively reduce the energy loss in cold (heat) matchmaker course of conveying.Can be used for the long distance high-efficient conveying of cold (heat) matchmaker.
Claims (4)
1. a phase-change energy-storing heat preservation pipeline, is characterized in that: it comprises interior conduit and Outer Tube, and interior conduit is set within Outer Tube, and is connected by the flange seal at its two ends; On described Outer Tube, homonymy is provided with two filler lines near the position of two end flange, and one of them filler line is provided with one-way valve, and another filler line mouth of pipe is provided with plugging pipe cap; Phase-change material is full of in space between inside and outside pipeline; So, form the phase-change energy-storing heat preservation pipeline of the semi-enclosed double-decked insulation of segmentation, each segment pipe is interconnected by the flange of its end.
2. phase-change energy-storing heat preservation pipeline according to claim 1, is characterized in that: described interior conduit, Outer Tube and flange are metallic material and make.
3. phase-change energy-storing heat preservation pipeline according to claim 2, is characterized in that: described end face of flange is the male and female flange of heavy convex two steps.
4. phase-change energy-storing heat preservation pipeline according to claim 3, is characterized in that: described interior conduit adopts seamless steel pipe, inserts in the heavy mouth of male and female flange, and with being welded to connect; Described Outer Tube adopts two pieces of semi-circular sheet steel butt welding to form, and is welded on the outer convex surface step of male and female flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510340329.7A CN104913153A (en) | 2015-06-18 | 2015-06-18 | Phase change energy storage insulation pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510340329.7A CN104913153A (en) | 2015-06-18 | 2015-06-18 | Phase change energy storage insulation pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104913153A true CN104913153A (en) | 2015-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510340329.7A Pending CN104913153A (en) | 2015-06-18 | 2015-06-18 | Phase change energy storage insulation pipeline |
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| CN (1) | CN104913153A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673989A (en) * | 2016-04-19 | 2016-06-15 | 苏州逸新和电子有限公司 | High-efficiency refrigeration tube |
| CN106641590A (en) * | 2016-12-22 | 2017-05-10 | 西北大学 | Heat accumulating type skid-mounted protection cover for heat insulation of pressure vessel and making method of heat accumulating type skid-mounted protection cover |
| CN106870877A (en) * | 2017-03-08 | 2017-06-20 | 东华大学 | It is a kind of to postpone the new method that pipeline freezes |
| CN107345600A (en) * | 2016-05-06 | 2017-11-14 | 冯杏华 | A kind of double-skin duct |
| CN107664241A (en) * | 2016-07-29 | 2018-02-06 | 江苏金通机械有限公司 | Well sealing thermal insulation casing compensator |
| CN107725963A (en) * | 2017-08-23 | 2018-02-23 | 上海空间推进研究所 | A kind of liquid alkali metal phase transformation valve |
| CN107725974A (en) * | 2017-09-29 | 2018-02-23 | 镇江市星耀智能装备有限公司 | A kind of pipeline for being incubated cold insulation |
| CN109962435A (en) * | 2019-04-25 | 2019-07-02 | 通鼎互联信息股份有限公司 | A kind of novel laying apparatu of cable fire resistant flame retardant |
| CN112944203A (en) * | 2021-03-22 | 2021-06-11 | 中海石油气电集团有限责任公司 | Heat preservation cold insulation circulation system based on phase change heat insulation material |
-
2015
- 2015-06-18 CN CN201510340329.7A patent/CN104913153A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673989A (en) * | 2016-04-19 | 2016-06-15 | 苏州逸新和电子有限公司 | High-efficiency refrigeration tube |
| CN107345600A (en) * | 2016-05-06 | 2017-11-14 | 冯杏华 | A kind of double-skin duct |
| CN107664241A (en) * | 2016-07-29 | 2018-02-06 | 江苏金通机械有限公司 | Well sealing thermal insulation casing compensator |
| CN106641590A (en) * | 2016-12-22 | 2017-05-10 | 西北大学 | Heat accumulating type skid-mounted protection cover for heat insulation of pressure vessel and making method of heat accumulating type skid-mounted protection cover |
| CN106870877A (en) * | 2017-03-08 | 2017-06-20 | 东华大学 | It is a kind of to postpone the new method that pipeline freezes |
| CN107725963A (en) * | 2017-08-23 | 2018-02-23 | 上海空间推进研究所 | A kind of liquid alkali metal phase transformation valve |
| CN107725963B (en) * | 2017-08-23 | 2020-04-24 | 上海空间推进研究所 | Liquid alkali metal phase change valve |
| CN107725974A (en) * | 2017-09-29 | 2018-02-23 | 镇江市星耀智能装备有限公司 | A kind of pipeline for being incubated cold insulation |
| CN109962435A (en) * | 2019-04-25 | 2019-07-02 | 通鼎互联信息股份有限公司 | A kind of novel laying apparatu of cable fire resistant flame retardant |
| CN109962435B (en) * | 2019-04-25 | 2024-03-12 | 通鼎互联信息股份有限公司 | Novel fire-resistant fire-retardant laying device of cable |
| CN112944203A (en) * | 2021-03-22 | 2021-06-11 | 中海石油气电集团有限责任公司 | Heat preservation cold insulation circulation system based on phase change heat insulation material |
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Application publication date: 20150916 |